US 12,348,001 B2
Light emission device
Akinori Hara, Anan (JP); and Toshiaki Yamashita, Komatsushima (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on Jun. 13, 2023, as Appl. No. 18/333,693.
Application 18/333,693 is a continuation of application No. 17/883,243, filed on Aug. 8, 2022, granted, now 11,721,950.
Application 17/883,243 is a continuation in part of application No. 17/016,202, filed on Sep. 9, 2020, granted, now 11,444,430, issued on Sep. 13, 2022.
Claims priority of application No. 2019-171453 (JP), filed on Sep. 20, 2019.
Prior Publication US 2023/0327399 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/026 (2006.01); G02B 3/04 (2006.01); G02B 27/30 (2006.01); H01S 5/00 (2006.01); H01S 5/02212 (2021.01); H01S 5/02253 (2021.01); H01S 5/02255 (2021.01); H01S 5/40 (2006.01)
CPC H01S 5/0267 (2013.01) [G02B 3/04 (2013.01); G02B 27/30 (2013.01); H01S 5/0087 (2021.01); H01S 5/02212 (2013.01); H01S 5/02253 (2021.01); H01S 5/02255 (2021.01); H01S 5/4025 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A light emission device comprising:
a plurality of semiconductor light-emitting elements;
an optical element configured to collimate light emitted from each of the plurality of semiconductor light-emitting elements and output a plurality of collimated beams; and
a paraboloid reflector configured to be irradiated with the plurality of collimated beams at a region avoiding a vertex of the paraboloid reflector, and to cause the plurality of collimated beams reflected by the paraboloid reflector to converge onto a focusing point, wherein:
in a plane that is perpendicular to an axis of a paraboloid of the paraboloid reflector and includes the focusing point, a reflective surface of the paraboloid reflector forms a single curved line.